PHP 8 compatibility Windows (php-memcached-dev#528)

Use PHP_VERSION_ID instead of _MSC_VER to select the right headers. win32/php_stdint.h
was removed in PHP 8.0.0 and php_stdint.h file was removed in PHP 8.2.0 entirely:
https://github.com/php/php-src/blob/PHP-8.2/UPGRADING.INTERNALS#L26

Author: lifenglsf

php_memcached_private.h

@@ -48,11 +48,11 @@
 #include <ext/standard/basic_functions.h>
 
 #ifdef PHP_WIN32
-  #  if PHP_VERSION_ID >= 80000
-  #  include "php_stdint.h"
-#else
-# include "win32/php_stdint.h"
-#endif
+   #  if PHP_VERSION_ID >= 80000
+   #  include <stdint.h>
+   #else
+   # include "win32/php_stdint.h"
+   #endif
 #else
 /* Used to store the size of the block */
 #  if defined(HAVE_INTTYPES_H)